A High-Sensitivity Knock Sensor Based on ZnO Nanowires Array as Piezoelectric Nanogenerator

2021 ◽  
Author(s):  
Li Sun ◽  
Nan Sun ◽  
Yongchen Liu ◽  
Chengming Jiang
Keyword(s):  
High Sensitivity ◽  
Zno Nanowires ◽  
Knock Sensor ◽  
Nanowires Array

Synthesis of Cu2O and ZnO Nanowires and their Heterojunction Nanowires by Thermal Evaporation: A Short Review

2014 ◽  
Vol 71 (5) ◽  
Author(s):  
Muhammad Arif Khan ◽  
Samsudi Sakrani ◽  
Syahida Suhaima ◽  
Yussof Wahab ◽  
Rosnita Muhammad
Keyword(s):  
Physical Vapor Deposition ◽  
Thermal Evaporation ◽  
Chemical Properties ◽  
High Sensitivity ◽  
Short Review ◽  
Zno Nanowires ◽  
Oxide Semiconductor ◽  
The Individual ◽  
Photovoltaic Solar Cells ◽  
Physical And Chemical

One dimensional metal oxide semiconductor nanowires of copper (I) oxide (Cu2O), zinc oxide (ZnO), and their heterojunction nanowires possess remarkable physical and chemical properties. ZnO and Cu2O areattractive because the metals are abundant on earth, inexpensive, nontoxic.Moreover, these oxides have useful optical and electrical properties suitable for a wide variety of electrical devices, because their electrical conduction can be predictably controlled by doping. We here restrict the disscussion using a Hot Tube Vacuum Thermal Evaporation. The NWs in these devices will be studied by physical vapor deposition known as vapor-liquid-solid (VLS). Therefore, we explore conventional methods, particularly the VLS of growing ZnO and Cu2O nanowires which are assisted by the catalyst.  In this short review, we report the individual and combined (Cu2O/ZnO) junction nanowires by PVD method.  The main advantages of these composite nanowires are the natural p-n characteristics, the broad light absorption, the high sensitivity to humidity changes, and the fast dynamic response. The combination of all characteristics offered by Cu2O/ZnO nanowires can enable the fabrication of diverse sensing devices, and photovoltaic solar cells.

scholarly journals High-Sensitivity Biosensor-Based Enhanced SPR by ZnO/MoS2 Nanowires Array Layer with Graphene Oxide Nanosheet

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Shiliang Guo ◽  
Xiaogang Wu ◽  
Zhiquan Li ◽  
Kai Tong
Keyword(s):  
Finite Element Method ◽  
Refractive Index ◽  
High Sensitivity ◽  
Metal Nanowires ◽  
The Finite Element Method ◽  
Spr Biosensor ◽  
Coupling Structure ◽  
Graphene Oxide Nanosheet ◽  
Medium Layer ◽  
Nanowires Array

A novel SPR biosensor that can achieve a high sensitivity is proposed; therefore, a new prism coupling structure based on metal nanowires array layer is designed in this paper. The thickness of each medium layer for the structure is analyzed to obtain the optimal SPR spectrum, by the finite element method, so that the sensitivity is able to be enhanced greatly. The optimal thicknesses of each medium layer are given, and the sensitivity of the SPR biosensor can reach as high as 210.75°/RIU for the refractive index of the sensing medium, from 1.30 to 1.38.

Fabrication of ZnO nanowires array with nanodiamond as reductant

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 96479-96483 ◽  
Author(s):  
Xin Li ◽  
Shuanglong Feng ◽  
Shuangyi Liu ◽  
Zhenhu Li ◽  
Liang Wang ◽  
...  
Keyword(s):  
Zno Nanowires ◽  
High Quality ◽  
Potential Applications ◽  
Nanowires Array

The availability of well-aligned high quality ZnO nanowires will extend the potential applications of such materials.

Fabrication of ZnO Bridging Nanowire Device by a Single-Step Chemical Vapor Deposition Method

2008 ◽  
Vol 1144 ◽  
Author(s):  
Yanbo Li ◽  
Ippei Nagatomo ◽  
Ryohei Uchino ◽  
Ichiro Yamada ◽  
Jean-Jacques Delaunay
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Gas Sensing ◽  
Gold Catalyst ◽  
Chemical Vapor ◽  
High Sensitivity ◽  
Single Step ◽  
Zno Nanowires ◽  
Oxide Semiconductor ◽  
Chemical Vapor Deposition Method

ABSTRACTZnO nanowires are directly integrated into a working device by a single-step chemical vapor deposition (CVD) method. Gold catalyst is patterned on a quartz glass substrate using a comb-shaped shadow mask and then ZnO is grown on the patterned substrate by CVD. Thick ZnO layers formed on the gold-patterned areas serve as native electrodes. Ultra-long (˜100 μm) ZnO nanowires grown across the gap between the ZnO electrodes and the nanowires serve as the sensing elements of the device. The device exhibits high sensitivity and fast response to UV illumination in air. Our method can be used to fabricate other metal oxide semiconductor bridging nanowire devices, which have promising applications in photodetection and gas sensing.

The large response current of a vacuum pressure sensor based on a vertically-aligned ZnO nanowires array

RSC Advances ◽  
2016 ◽  
Vol 6 (115) ◽  
pp. 114566-114571 ◽  
Author(s):  
Ding Wang ◽  
Xuejun Zheng ◽  
Xinchao Cao ◽  
Xianying Wang ◽  
Tong Zhang
Keyword(s):  
Pressure Sensor ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Zno Nanowires ◽  
Vacuum Pressure ◽  
Vertically Aligned ◽  
Sensitive Characteristics ◽  
Response Current ◽  
Nanowires Array ◽  
Large Response

A vertically-aligned ZnO nanowires (VA-ZnO-NWs) array was prepared via chemical vapor deposition, which was used to fabricate a vacuum pressure sensor and its sensitive characteristics were measured using a semiconductor parameter tester.

scholarly journals ZnO nanowires array grown on Ga-doped ZnO single crystal for dye-sensitized solar cells

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Qichang Hu ◽  
Yafeng Li ◽  
Feng Huang ◽  
Zhaojun Zhang ◽  
Kai Ding ◽  
...  
Keyword(s):  
Solar Cells ◽  
Single Crystal ◽  
Dye Sensitized Solar Cells ◽  
Zno Nanowires ◽  
Dye Sensitized ◽  
Doped Zno ◽  
Zno Single Crystal ◽  
Sensitized Solar Cells ◽  
Nanowires Array

ZnO nanowires array p-n homojunction and its application as a visible-blind ultraviolet photodetector

2010 ◽  
Vol 96 (5) ◽  
pp. 053102 ◽  
Author(s):  
Y. H. Leung ◽  
Z. B. He ◽  
L. B. Luo ◽  
C. H. A. Tsang ◽  
N. B. Wong ◽  
...  
Keyword(s):  
Zno Nanowires ◽  
Ultraviolet Photodetector ◽  
Visible Blind ◽  
Nanowires Array
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